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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 14 — Jul. 15, 2009
  • pp: 2114–2116

Tunable optical filter having a large dynamic range

Ofir Aharon and I. Abdulhalim  »View Author Affiliations


Optics Letters, Vol. 34, Issue 14, pp. 2114-2116 (2009)
http://dx.doi.org/10.1364/OL.34.002114


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Abstract

A novel (to our knowledge) concept for a tunable birefringent filter with a high dynamic range is proposed and demonstrated by using a stack of liquid-crystal retarders having different thicknesses following an arithmetic sequence. Each retarder is between crossed polarizers with its optic axis oriented azimuthally at 45° to the polarizer axis. The tunable filter was fabricated by using nematic liquid crystals demonstrating tunability over a range of 800 nm , covering the visible and the near IR; hence it has a potential for use in biomedical optical imaging applications.

© 2009 Optical Society of America

OCIS Codes
(120.2440) Instrumentation, measurement, and metrology : Filters
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices
(310.5448) Thin films : Polarization, other optical properties
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:
Optical Devices

History
Original Manuscript: May 14, 2009
Revised Manuscript: June 11, 2009
Manuscript Accepted: June 11, 2009
Published: July 7, 2009

Virtual Issues
Vol. 4, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Ofir Aharon and I. Abdulhalim, "Tunable optical filter having a large dynamic range," Opt. Lett. 34, 2114-2116 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-14-2114


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